Vehicle Seat

• US 20110284713A1
• Filed: 05/19/2011
• Published: 11/24/2011
• Est. Priority Date: 05/20/2010
• Status: Active Grant

• Current Assignee: Adient US, LLC (Adient plc)
• Original Assignee: Keiper GmbH & Company KG (Johnson Controls International plc)
• Inventors: ELLERICH, Frank
• Granted Patent: US 8,622,363 B2
• Time in Patent Office: Days
• US Class Current: 248/421
• CPC Class Codes: B60N 2/502 attached to the base of the seat B60N2/504 takes precedence
• CPC Class Codes: B60N 2/508 Scissors-like structure
• CPC Class Codes: B60N 2/52 using fluid means
• CPC Class Codes: B60N 2205/20 Measures for elimination or compensation of play or backlash

Abstract

A vehicle seat having an oscillatory scissor-type stand and a damper that is articulated at two parts of the scissor-type stand which are movable relative to one another. One end of the damper is articulated at a pin that extends in transverse direction of the seat and extends between two structural parts arranged at a distance from one another in transverse direction of the seat at a part of the scissor-type stand. A bearing bushing is arranged with its axial bushing opening on a tubular component part enclosing the pin, wherein the bushing opening has a spherical longitudinal section with the greatest diameters at the two axial ends and the smallest diameter in the middle of the bushing opening. The bearing bushing is enclosed by a bearing ring of the damper having a shorter axial length than the bearing bushing and is arranged on the bearing bushing at an axial distance from the two ends of the bearing bushing so as to be secured against axial displacement. The bearing bushing is arranged between the structural parts without axial play.

Claims

1. A vehicle seat, comprising:

an oscillatory scissor-type stand having two pairs of rocker arms arranged at a distance from one another;

a pair of structural parts coupled to one or more of the rocker arms

a pin that extends between the pair of structural parts;

a damper that is articulated at two parts of the scissor-type stand which are movable relative to one another, wherein one end of the damper is articulated at the pin;

a bearing bushing arranged between the pair of structural parts with its axial bushing opening on one of the pin and a tubular component part enclosing the pin, the bushing opening having a spherical longitudinal section with its greatest diameters at its axial ends and a smallest diameter in the middle region of the bushing opening; and

a bearing ring of the damper arranged between the structural parts without axial play and configured to enclose the bearing bushing by having a shorter axial length than the bearing bushing, the bearing ring arranged on the bearing bushing at an axial distance from the two ends of the bearing bushing so as to be secured against axial displacement.

2. The vehicle seat according to claim 1, wherein the bearing bushing is supported by its front end at the structural parts one of directly and by spacer elements, wherein at least one of the front ends of the bearing bushing is supported in an axially resilient manner.

3. The vehicle seat according to claim 2, wherein the bearing bushing has at one front end one or more spring arms that are directed radially outward and by which the bearing bushing is axially supported at a structural part.

4. The vehicle seat according to claim 3, wherein the spring arms comprise a first spring arm portion directed radially outward and a second spring arm portion extending axial to the longitudinal axis of the bearing bushing,

wherein the end of the second spring arm portion remote of the first spring arm portion is connected to the bearing bushing.

5. The vehicle seat according to claim 1, wherein one or more stops are fixedly arranged in the end region of the bearing bushing having the spring arms, which stops project radially outward from the radially circumferential cylindrical outer lateral surface of the bearing bushing, and one end face of the bearing ring contacts the stops axially.

6. The vehicle seat according to claim 5, further comprising a second stop arranged at the end region of the bearing bushing opposite the stops, the bearing ring contacting the second stop axially by its second end face.

7. The vehicle seat according to claim 6, wherein the second stop is a ring that can be inserted into an annular groove arranged radially circumferentially at a cylindrical outer lateral surface of the bearing bushing.

8. The vehicle seat according to claim 3, wherein the tubular component part is enclosed by the bearing bushing has at one axial end a first spacer element that projects radially outward by which the bearing bushing is supported by one of one front end and by the spring arms at one of the structural parts.

9. The vehicle seat according to claim 2, further comprising a cap-shaped second spacer element arranged on a second axial end of the tubular component part enclosed by the bearing bushing, the bearing bushing is axially supported at the front side of the radially circumferential cap edge of the second spacer element, and the second spacer element is supported at the second structural part by its cap base.

10. The vehicle seat according to claim 1, wherein the pin is a screw whose shaft projects through a first axial bore hole in the first structural part, the tubular component part, a bore hole in the cap base, and a second axial bore hole in the second structural part, wherein one end of the screw shaft has a screw head that contacts the outer side of one structural part, and the other end of the screw shaft is provided with a thread on which a nut is screwed that contacts the outer side of the other structural part.

11. The vehicle seat according to claim 1, wherein the seat is a seat in a commercial vehicle.

12. The vehicle seat according to claim 2, wherein each of the pair of structural parts is fastened to a support element that couples the two pairs of rocker arms.

13. The vehicle seat according to claim 12, wherein the support element is arranged at a crossing point of each pair of rocker arms.